Results 51 to 60 of about 50,118 (265)

The clustering and X-ray properties of faint galaxies [PDF]

, 1994
The clustering properties of faint (23 ≤ B ≤ 27) galaxies were investigated, with the aim of obtaining information about their redshift distribution, N(z), and therefore about the processes of galaxy evolution causing the steep rise in the galaxy number ...
Roche, Nathan, Roche, N
core  

Effects of Dietary Mannan Oligosaccharides on Growth, Disease Resistance, and Gut Microbiota in Zebrafish

Animal Research and One Health, EarlyView.
Supplementation with mannan oligosaccharides (MOS) enhances growth, disease resistance, antioxidant capacity, and gut microbiota diversity while suppressing inflammation, apoptosis, and strengthening intestinal barrier integrity in zebrafish challenged with LPS or DSS.
Zhiyuan Lu, Longjiang Tang, Lei Deng, Ziheng Ren, Zhiyuan Gong   +4 more
wiley   +1 more source

Long Period Variables in Local Group Dwarf Galaxies [PDF]

, 2006
In this work the results are presented of an extensive search for Long Period Variables stars (LPVs) in a sample of Local Group irregular dwarf galaxies.
Snigula, Jan
core   +1 more source

The Delay Time Distribution of Tidal Disruption Events

The Astrophysical Journal
Tidal disruption events (TDEs) can be observed when stars get too close to supermassive black holes and are torn apart and accreted. The delay time distribution of TDEs, or rate of TDEs as a function of time since a burst of star formation, can be used ...
Margaret Shepherd, K. Decker French, Nicholas C. Stone, Nicholas Earl, Denyz Melchor, Teddy R. Smith, Jean Somalwar, Odelia Teboul, Margaret E. Verrico   +8 more
doaj   +1 more source

The nature and origin of disky elliptical galaxies [PDF]

, 2002
The observational trend that disky elliptical galaxies exhibit younger luminosity- weighted ages than boxy ellipticals is investigated. The presence of a possible young stellar disk embedded in these galaxies is explored by comparing kinematics derived ...
McDermid, Richard Morgan
core  

Shape asymmetry : a morphological indicator for automatic detection of galaxies in the post-coalescence merger stages [PDF]

, 2016
MMP and VW acknowledge support from the European Career Reintegration Grant Phiz-Ev (P.I. VW). VW, KR and JM-A acknowledge support from the European Research Council Starting Grant SEDMorph (P.I. VW).
Wild, V., Rowlands, K., Walcher, C. J., Mendez Abreu, Jairo, Villforth, Carolin, Villforth, C., Mendez-Abreu, J., Johansson, P. H., Rowlands, Kate Elizabeth, Johansson, P.~H., Hewlett, T., Walcher, C.~J., Hewlett, Tim, Pawlik, Milena, Wild, Vivienne, Pawlik, M.~M., Pawlik, M. M., Villforth, C.; id_orcid, Wild, Vivienne; id_orcid   +18 more
core   +1 more source

Principal Component‐Based Classification of Blazar Candidates of Uncertain Type in the 4FGL/LAT

Astronomische Nachrichten, EarlyView.
ABSTRACT We adopted principal component analysis (PCA), linear discriminant analysis (LDA), and support vector machines (SVM), to study classification for a sample of 2708 Fermi blazars: 1142 BL Lac objects (BLLs), 759 flat spectrum radio quasars (FSRQs), and 807 blazar candidates of uncertain type (BCUs).
Wen‐Xin Yang, Guo‐Hai Chen, Jing‐Tian Zhu, Hong‐Guang Wang, Denis Bastieri, Xu‐Hong Ye, Jing‐Chao Liang, De‐Xiang Wu, Jiang‐He Yang, Anton A. Strigachev, Rumen S. Bachev, Jun‐Jie Feng, Yi Liu, Jun‐Hui Fan   +13 more
wiley   +1 more source

The Delay Time Distribution of Quasiperiodic Eruptions

The Astrophysical Journal Letters
Quasiperiodic eruptions (QPEs) are quasiperiodic X-ray bursts observed in the nucleus of a galaxy. Multiple pieces of observational evidence link QPEs to tidal disruption events (TDEs), which occur when stars are disrupted after approaching a ...
Margaret Shepherd, K. Decker French, Jason T. Hinkle, Ferdinand, Samaresh Mondal, Yashasvi Moon, Margaret E. Verrico   +6 more
doaj   +1 more source

Diverse reddening distributions in sight lines for type Ia supernovae

Astronomy & Astrophysics
Context. Accurate cosmological constraints from type Ia supernovae (SNe) require sufficiently accurate corrections for host-galaxy extinction. Modelling these corrections is challenged by the problem of disentangling the SN’s intrinsic colours from host ...
Hallgren Lucas, Wojtak Radosław, Hjorth Jens, Steinhardt Charles L.   +3 more
doaj   +1 more source

Molecular hydrogen in galaxies [PDF]

, 1987
This study aims to understand the key role played by molecular hydrogen in the evolution of galaxies, with a view to constraining its radial distribution in the Galaxy and the CO→H(_2) conversion factor α(_20).The star formation rate is shown to be ...
Wilkinson, David Adam, Wilkinson, D.A
core